(Bloomberg) -- Gemini, the cryptocurrency firm backed by the billionaire Winklevoss twins, has filed confidentially for an initial public offering, according to people familiar with the matter.

The Winklevoss twins were known for the legal battle with Mark Zuckerberg over Facebook but since then, they have built a crypto-based empire that is ever expanding. Cameron and Tyler Winklevoss ...

That might include the Winklevoss twins. Tyler and Cameron bought 120,000 bitcoins in late 2012 with money from the $65 million payout from their lawsuit against Facebook. SEE ALSO: Bitcoin just ...

The firm, founded by billionaire Cameron and Tyler Winklevoss, is working with Goldman Sachs and Citigroup, the report said, noting that no final decision has been made on the listing. The ...